Stadium: Centre Court Round: 25 Ground: Hardcourt indoor
| ITF M15 Bratislava | 2021/08/25 08:00 | Lukas Palovic v Kalenichenko, Danylo | 2-6,2-6 |
| Challenger Bratislava | 2021/11/08 09:30 | Martin Krumich v Kalenichenko, Danylo | 2-6,2-6 |
| Challenger Bratislava | 2021/11/07 09:30 | Kalenichenko, Danylo v Ignatik, Uladzimir | 7-6,6-4 |
| ITF M25 Prague | 2021/10/07 09:20 | Kalenichenko, Danylo v Ignatik, Uladzimir | 3-6,6-3,3-6 |
| ITF M25 Prague | 2021/10/05 11:05 | Kalenichenko, Danylo v Daniel Paty | 6-4,6-1 |
| Istanbul, Turkey | 2021/09/12 09:20 | Nick Chappell v Kalenichenko, Danylo | 7-6,6-4 |
| Challenger Kyiv | 2021/09/06 08:00 | Kalenichenko, Danylo v Ivan Gakhov | 4-6,2-6 |
| Challenger Kyiv | 2021/09/05 09:25 | Otto Virtanen v Kalenichenko, Danylo | 6-3,2-6,4-6 |
| ITF M15 Bratislava | 2021/08/29 08:00 | Mate Valkusz v Kalenichenko, Danylo | 6-0,6-2 |
| ITF - M15 Antalya | 2021/10/18 07:00 | Arthur Bonnaud v Lukas Palovic | 7-6,6-2 |
| ITF - M15 Antalya | 2021/10/17 07:00 | Kulibaba, Artur v Lukas Palovic | 1-6,1-6 |
| ITF - M15 Antalya | 2021/10/14 08:50 | Lukas Palovic v Juan Pablo Paz | 3-6,1-6 |
| ITF - M15 Antalya | 2021/10/12 07:00 | Lukas Palovic v Denis Klok | 4-6,6-0,6-3 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/22 08:00 | Cezar Cretu v Lukas Palovic | 6-4,6-4 |
| ITF M15 Zlatibor | 2021/09/16 08:00 | Lukas Palovic v Nagy, Peter | 3-6,3-6 |
| ITF M15 Zlatibor | 2021/09/14 09:30 | Denis Klok v Lukas Palovic | 3-6,3-6 |
| ITF M15 Zilina | 2021/09/01 08:00 | Lukas Palovic v Malla, Bastian | 2-6,6-7 |